pwalkr · July 24, 2022 02:33
diff --git a/ansible_docker_build_tag.yaml b/ansible_docker_build_tag.yaml
 # This step generates an image tag based on git tree hash of the source folder so
 # the tag changes whenever your source changes and will trigger new builds/pulls.
 # If the image is tracking an upstream app, I'll add a "{{ base_tag }}-" prefix
 # so I get a new image if the source version changes but my wrapper does not.

 # This can be hidden in vars/main.yml to avoid a dedicated step
 - set_fact:
    # Extracted for shorter lines - this command assumes the parent directory to
    # roles/ is the root of a git repository.
    get_tag_cmd: git rev-parse HEAD:roles/myapp/files/docker

    # For apps with an upstream version I'll add a {{ base_tag }}- prefix 
    image_name: 'local/myapp:{{ lookup("pipe", get_tag_cmd)[:7] }}'
    
 - name: build docker image
  community.docker.docker_image:
    name: '{{ image_name }}'
    source: build
    build:
      path: '{{ role_path }}/files/docker'
  delegate_to: localhost
	# This step generates an image tag based on git tree hash of the source folder so
	# the tag changes whenever your source changes and will trigger new builds/pulls.
	# If the image is tracking an upstream app, I'll add a "{{ base_tag }}-" prefix
	# so I get a new image if the source version changes but my wrapper does not.

	# This can be hidden in vars/main.yml to avoid a dedicated step
	- set_fact:
	# Extracted for shorter lines - this command assumes the parent directory to
	# roles/ is the root of a git repository.
	get_tag_cmd: git rev-parse HEAD:roles/myapp/files/docker

	# For apps with an upstream version I'll add a {{ base_tag }}- prefix
	image_name: 'local/myapp:{{ lookup("pipe", get_tag_cmd)[:7] }}'

	- name: build docker image
	community.docker.docker_image:
	name: '{{ image_name }}'
	source: build
	build:
	path: '{{ role_path }}/files/docker'
	delegate_to: localhost